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DTC codes / P2Dxx · Hybrid propulsion / P2DA2

P2DA2Gear Shift Control Module B Supply Voltage High

P2DA2 indicates that the gear shift control module B has reported a supply voltage that is higher than the manufacturer's expected range, typically above 16 volts or a module-specific threshold. The transmission control module (TCM) or the gear shift control module itself monitors its power feed and sets this code when the voltage on the supply circuit exceeds the calibrated limit for a set time.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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